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On genuine sapogenin of ginseng

โœ Scribed by S. Shibata; O. Tanaka; M. Sado; S. Tsushima

Publisher
Elsevier Science
Year
1963
Tongue
French
Weight
232 KB
Volume
4
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

PREVIOUSLY we reported the formation of a sapogenin named panaxadiol, C5CH520j, m.p. 250*, [aID 18.5 + l.O", from saponin of Ginseng (the roots of Panax ginseng C.A. Meyer), and elucidated its chemical reactions' and stereochemistry 2 to propose the structure (I). It has now been shown by the present study that panaxsdiol (I) is not a genuine sapogenin of Ginseng, but an artifact formed during the process of hydrolysis of saponin.

The neutral saponin isolated from Ginseng roots was treated with 0.7% H2S04 in aq. methanol to give a prosapogenin which would be corresponding to Kotake's a-panaxin3.

On refluxing the prosapogenin with 7% HCl in aq. ethanol panaxadiol was yielded, whereas on treating with cont. HCl at room temperature, an unstable chlorine containing compound,

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โœ Shoji Shibata; Mitiiti Fujita; Hideji Itokawa; Osamu Tanaka; Tatsuo Ishii ๐Ÿ“‚ Article ๐Ÿ“… 1962 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 166 KB

THE roots of Panax sinsenq C.A. Mey. is well-known as a Chinese drug which is widely employed cs a tonic and other remedies.

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Previously, we have described (1) that acid hydrolysis of the crude soponin obtained from the root of Bupleurum falcotum L. afforded saikogenins A (I), isolation of which was first reported by Shibato et al. (2), B (II), C (III) and D (IV) ond longispinogenin. Recently, Aimi and Shibota (3) and the